MXZ-SM48NAMHZ Installation Manual

7
4. Installing the refrigerant piping
4.2. Pipe length and height difference
4.2.1. Connection without Branch Box (Fig. 4-1)
B
A
H
B C
L
r
D
e
a
h
b c d
C
C
A
CCC
A, B, C, D (mm [inch])
Liquid pipe Gas pipe
SM36/42/48
ø9.52 [3/8]
ø15.88 [5/8]
SM60 ø19.05 [3/4]
a, b, c, d, e, f (mm [inch])
Model number Liquid pipe Gas pipe
04, 05, 06, 08, 12, 15, 18 ø6.35 [1/4] ø12.7 [1/2]
24, 27, 30, 36, 48, 54 ø9.52 [3/8] ø15.88 [5/8]
72 ø9.52 [3/8] ø19.05 [3/4]
Branch kit model
CMY-Y62-G-E
4-Branching header 8-Branching header
CMY-Y64-G-E CMY-Y68-G-E
Piping preparation
1 Tablebelowshowsthespecicationsofpipescommerciallyavailable.
Outside diameter Insulation thickness
Insulation material
mm (inch) mm (inch)
6.35 (1/4) 8 (5/16)
Heat resisting foam plastic 0.045
specicgravity
9.52 (3/8) 8 (5/16)
12.7 (1/2) 8 (5/16)
15.88 (5/8) 8 (5/16)
19.05 (3/4) 8 (5/16)
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
3 Refrigerant pipe bending radius must be 4" (100 mm) or more.
Caution:
Be sure to use the insulation of specied thickness. Excessive thickness may
cause incorrect installation of the indoor unit and lack of thickness may cause
dew drippage.
Warning:
When pumping down the refrigerant, stop the compressor before disconnect-
ing the refrigerant pipes. The compressor may burst and cause injury if any
foreign substance, such as air, enters the system.
A Outdoor Unit
B First Branch
C Indoor unit
SM36/42/48 SM60
A+B+C+D+a+b+c+d+e
[ 300 m [984 ft] [ 150 m [492 ft]
L = A+B+C+D+e
[ 150 m [492 ft] [ 80 m [262 ft]
R = B+C+D+e
[ 30 m [98 ft]
H Outdoor higher
[ 50 m [164 ft]
Outdoor lower
[ 40 m [131 ft]*
[ 40 m [131 ft]
h
[ 15 m [49 ft]
* When PKFY-P06NBMU, PKFY-P08NHMU, PKFY-P04/06/08/12NLMU, PFFY-
P06/08/12NEMU, or PFFY-P06/08/12NRMU is included, use within 30 m [98 ft].
B
A
A
a
b
c d
C
D
e f
H
h
L
r
CC
CC
C
A Outdoor Unit
B First Branch
C Indoor unit
D Cap
SM36/42/48 SM60
A+a+b+c+d+e+f
[ 300 m [984 ft] [ 150 m [492 ft]
L = A+f
[ 150 m [492 ft] [ 80 m [262 ft]
R = f
[ 30 m [98 ft]
H Outdoor higher
[ 50 m [164 ft]
Outdoor lower
[ 40 m [131 ft]*
[ 40 m [131 ft]
h
[ 15 m [49 ft]
* When PKFY-P06NBMU, PKFY-P08NHMU, PKFY-P04/06/08/12NLMU, PFFY-
P06/08/12NEMU, or PFFY-P06/08/12NRMU is included, use within 30 m [98 ft].
Fig. 4-1
Conversion formula
1/4 F ø6.35 (1/4)
3/8 F ø9.52 (3/8)
1/2 F ø12.7 (1/2)
5/8 F ø15.88 (5/8)
3/4 F ø19.05 (3/4)
en
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